Speed-changing mechanism



Aug. 26, 1930. E. ca. KESLING SPEED CHANGING MECHANISM Fi led Oct. 9, 1929 3 Sheets-Sheet 1 6, 1930. E. G. KE SLING 1,773,903

SPEED CHANGING MECHANISM Filed Oct. 9, 1929 s Sheets-Sheet 2 Aug. 26, 1930. as. KESLING 1,773,903

SPEED CHANGING MECHANISM Filed Oct. 9, 1929 .3,Sh88tS-Sh68t 5 Patented Aug. 26, 1930 UNITED STATES ELMER G. KESLING, OF BLOOMFIELD, MISSOURI SPEED-CHANGING MECHANISM A pplication'filed October 9, 1929. Serial No. 398,292.

This invention relates to speed changing mechanism and is designed specially for use as equipment on motor vehicles; and an object is to provide improved means for imparting selective longitudinal sliding and rocking movements to a gear shifting spindle by operation of .a longitudinally movable rock shaft havingnovel cooperative connection with intermediate actuating devices for im arting said movements to the spindle.

nother object of the invention is to provide an intermediate rock shaft and' a link for imparting longitudinal and rocking movements, respectively, to the spindle and novel connections for obtaining and mainlfy longitudinal movements are imparted to the spindle by rocking movements of the intermediate rock shaft, are of novel construction and arrangement (and are capable of variation and relative adjustment so that the connections between the parts are not strained or forced.

The connections for the link are constructed and arranged in a novel manner sothat the link can be satisfactorily connected with the parts with which it is to cooperate irrespective of variations in the respective positions of said'parts which would interfere with proper cooperation of the elements inthe devices of ordinary construction.

Another object of the invention is to pro- 49 vide a construction, combination and arrangement of parts constituting an improvement upon and advance beyond the specific form of invention disclosed in-my cogending application Serial No. 305,441, filed eptember 12, 1928. While many of the broad principles of the invention are the same as the broad principles disclosed and claimed in my saidcopending application, it will be made clearenough by the following description,

1 taken in connection with the annexed draw ,ings, that various features and parts of the present invention are highly desirable and may in some instances be preferred.

Various other objects and advantages will appear from the following description, refer ence being made to the drawings in which- Fig. 1 is a side elevation of the invention embodied in an automobile.

Fig. 2 is a rear elevation of the invention.

Fig. 3 is an enlarged side elevationshowing the connection of the intermediate actuating members with the longitudinally movable rock shaft.

. Fig. 4 is a sectional view on the line 4-4 of Fig. 3 looking in the direction indicated by the arrows.

Fig. 5 is a sectional View onthe line 55' of Fig. 3' looking in the direction of the arrows on said section line.

Fig. 6 is an enlarged side elevation showing the connections of theintermediate actuating devices with the longitudinally movable rock spindle. Y

Fig. 7 is a sectional view on the line 7-7 of Fig. 8 showing the bearing and its support. for the intermediate rock shaft.

Fig. 8 is a sectional view approximately on the line 88 of Fig. 6 looking in the direction of the arrows on said section line. I

The present invention is shown as a speed changing mechanism for an automobile, the body of which has a floor 1 through which the clutch and brake pedals 2 and 3 extend. The steering column 4 and the wheel 5 thereon are in the usual positions. The automobile has the usualtype of sliding gear transmission located Within a transmission case (not shown). The gear shifting spindle 6 is supported by the transmission case for longitudinal and rocking movements and it is this spindle that selectively shifts the gears by any appropriate type of connections provid'ed for that purpose. This present invention is not concerned with such connections and it is enough for the present purposes to state that the desired results are obtained by longitudinal and rocking movements of the spindle 6 and that the present invention comprises improved mechanism, .devices andconnectronsfor impart ng such movements to said spindle 6. This spindle 6 projects beyond the transmission case through a sleeve 7 having in connection therewith a supporting flange 8.

A control shaft 9 is mounted for rocking and sliding movements in a bearing device 10 attached to the steering column 4 below the wheel 5. The lower end of the shaft 9 is supported in a bearing 11 rigidly clamped inv connection with the steering column 4 by a cooperating clamp member 12 and bo1ts 13 (Figs. 3 and 5). In the specific mounting and relationship shown, the shaft .9 is par- I vision of the oblique slot 15 provides a construction whereby proper manipulation of said lever will impart rocking'and longitudinal sliding movements selectively to said shaft 9. By swinging the end of the lever 16 toward the ends of the slot 15, the shaft 9 will be rocked; and by operating said lever 16 upon the upper and lower edges of the slot 15 as fulcrums, longitudinal sliding movements. will be imparted to said shaft 9. The inclination of this slot 15 permits easy operation of the lever 16 without interference' by the inclined steering wheel 5.

An intermediate rock shaft 17 is provided and is mounted in such a manner that rocking movements are imparted thereto by longitudinal movements of the shaft 9. Further, this shaft 17 is connected up with the spindle 6 in such a manner that rocking movements of said shaft 17 moves the spindle 6 longitudinally from' and to a starting position. One end of this intermediate shaft 9 is supported for turning movements in a bearing 18 formed with an integral arm comprising a dished or concaved portion 19 seated against a matching rounded or convexed part 20'of the bearing 11. through a hole 21 which is of larger diameter than the diameter of the screw bolt 22 which passes through'said hole 21 and screws into a threaded hole in the bearing 11 (Figs. 4 and 5). A washer 23 has in one side a concavity seating against the convex outer surface of the arm 19 and constitutes a clamping device whereby the bolt 22 will rigidly secure and hold the arm 19 immov able with respect to the support 20 to which it is secured. This, of course, prevents the bearing 18 from becoming dislocated so that said bearing 18 will maintain the rigid relationship to the other parts in which said bearing is mounted.

The opposite end of the shaft 17 is supported for rocking movements in a bearing 24 (Figs. 7 and 8) supported by a concave This arm 19 has thereclamping bolt 28 which passes through said hole 27 and is engaged in the part 26. The provision of these holes 21 and 27 of larger diameterv than the diameters of the bolts 22 and 28, respectively,,permits proper adjustment of the bearings 18 and 24 with respect to each other so that said bearings may be perfectly alined more easily than could be done by attachments and constructions not possessing these advantages. has a concavity in one side seated against the convex surface of the arm and, constitutes a clamp engaged by the headof the bolt 28 to secure the arm 25 in rigid connection with the supporting portion 26 to which it is attached.

An actuator for imparting turning movements to the shaft 17 by longitudinal movements of the shaft 9 is provided. In the specific embodiment shown, this actuator comprises a sleeve 30 attached to the lower end of the shaft 9 by a pin 31 or other appropriate fastening means and having formed in one side thereof a radial slot 32. A sleeve 33 is attached to the shaft 17 by a pin 3a or other appropriate fastening means so that said sleeve cannot turn with respect to said shaft 17 and will impart turnlng movements to said" shaft 17. This sleeve 33 is provided with an integral laterally extended arm 35 having a rounded terminal portion 36 engaged in the slot 32. Thus, the rounded end 36 of the arm 35 forms a universal pivot of a kind that will permit the shaft9 to turn in either direction without imparting any movement to the arm 35-36 or to the shaft 17. However, longitudinal movement of the shaft 9 will impart turning movements to the shaft 17 The sleeve I 33 is preferably in abutting contact with one end of the bearing 18 so as to hold the shaft 17 from longitudinal movementsin one direction.

The opposite end of the shaft 17 has attached thereto a sleeve 37 (F igs. 7 and 8) abutting against the end ofthe bearing 24' and preventing longitudinal movements of 3" the shaft 17 in the other direction. The sleeve 37 is formed with a laterally extended arm 38 having a rounded end portion 39 engaging in a slot 40 formed in a sleeve 41 that is attached to the spindle 6. Thus, the rounded end 39 of the arm 38 forms a universal pivot of a kind that will permit the spindle 6 to turn in either direction without interference by said arm 38. The sleeve 37 is capable of adjustment in any position along or A washer 29 about the shaft 17 The device for this purv pose comprises a pin 42 mounted in the sleeve 37 that intersects the hole in said sleeve through which the shaft 17 extends. The pin 42 is formed witha rounded notch 13 to receive the shaft 17. Thus, when the pin 42 is mounted in the sleeve 37, said sleeve may be slipped or moved along or turned about the shaft 17 to any desired adjustment or position without interference by the pin 42. After the sleeve is properly located along and about the shaft 17, the parts are clamped in such location by screwing a nut 44 onto a threaded end of the pin 42 so as to cause said pin to clamp the shaft 17 in an obvious manner (Fig. 8). By loosening the nut 44, the sleeve 37 may be loosened or released for re moval or adjustment.

It is now clear that longitudinal move-' ments of the shaft 9 will impart turning movements to the intermediate shaft 17; and that said turning movements of said'intermediate shaft 17 will impart longitudinal movements to the spindle 6. Further, the shaft 9 may be turnedwithout'moving the shaft 17 .in any manner, and the spindle 6 may be turned without interference'by the shaft 17 or'any of its connections.

The ball and slot connections between the shaft 9, and the shaft 17 and between the shaft 17 and the spindle 6,'toget'her with the adjustable alinement featureof the bearings 18- and 24 facilitates mounting of the device upon the automobile, because it is possible with these connections to adjust the shaft 17 at different angles, Within reasonable limits, in relation to the shaft 9 and the spindle 6. Such adjustments will not interfere with the operation of the device or the transmission of the required movements.

The present invention comprises means whereby turning movements of the shaft 9 will impart turning movements to the spindle 6. The connections for this purpose comprise a link including a part 45 and a part 46. These link parts 45 and 46 are clamped together in a relationship to form a single link and the clamp devices by which the link parts are held together may be loosened, and

. tightened to permit the link members 45 and 46 to be placed in different ad iistments to vary the length of the link., The contacting surfaces of these link members 45 and 46 may be provided with serrations 47 (Fig. 8) to cooperate with the clamp devices to prevent slipping of the link members. -One of these link members has therein longitudinal slots 48 receiving clamping bolts 49 which project through the other link member. .The parts. are clamped together by nuts 50 screwed on the ends of the bolts 4 I The free end of the link member 45 is pivoted on a crank pin 51 projecting downwardly from a crank arm 52 that is formed integral or rigid with the sleeve 30 (Fig. 4).

' A s ring-53 is mounted on the pin 51 and is hel under compression by a washer 54 supported on the crank pin by a cotter pin 55 or equivalent device. This spring 53wil1 prevent the link 45 from rattling or chattering when the -automobile is in use but will not interfere with the freedom of operation of the parts.

The opposite end of this link is pivoted to a crank pin 56 projecting from a crank arm I 57 that is rigid or integral with the sleeve 41. The sleeve 41 is rigidly secured to the spindle 6 by a pin 58 or other appropriate fastening means. The link is pressed to proper position on the link pin-56 by a spring 59 held under compression by a washer 60 and a cotter pin or equivalent fastening device 61.

It is now clear that when the shaft 9 is turned, the link 4546 is thereby moved longitudinally and turning movements are thereby imparted to the spindle 6 without interference by the shaft 17 or its connections. Further, longitudinal movements of the shaft 9 will impart turning movements to the shaft 17 and thereby move the spindle 6 longitudinally without interference by the link. The lost motion between the link and its connections is provided and obtained by the construction shown or described includimparting rocking movements to the shaft 17 by longitudinal movements of the shaft 9 and permitting turning movements of the shaft 9 while "the shaft 17 remains unoperated; and the connection between the shaft 17 and, the spindle 6 for moving the spindle 6 longitudinally by turning movements of the shaft 17 and leaving the shaft 17 unoperated when the spindle 6 isturned, constitute a novel and highly improved form of gearing for these purposes. Broadly the projection- 35--36 engaging in the slot 32 and the projection 3839 engaging in theslot 40 respectively, constitute intermeshing gears. In these gears, the parts 30 and 41 are freely rotative with respect to the gear members engaging them while the shaft 17 remains unoperated. These gear connections facilitate [andeXpedite the assembly of this mechadetracting from the efficiencyof the completiii ed assembly. These advantages are obtained by these pivotal gear devices and cannot be obtained by other types of gearing. For

these and other reasons now apparent, this type of gearing is broadly claimed.

It must now be apparent that my inven' tlon obtains all of its intended objects in a highly efficient and satisfactory manner. The construction, arrangement and relationship of the parts may be varied within the scope of equivalent limits without departure from the nature and principle ofthe invention. I do not restrict myself specifically otherwise than as set forth in the appended claims nor do I restrict myself unessentiallyin any respects.

What I claim and desire to secure by Letters Patent is:

1. In speed changing mechanism, a spindle supported for rocking and longitudinal movements, a shaft supported for rocking and longitudinal movements, an intermediate shaft supported for rockin movements, means for rocking said intermediate shaft by longitudinal movementsv ofsaid first shaft,

means for moving said spindle longitudinally by rocking movements of said intermediate shaft, and means for imparting turning movements to said spindle by turning movements of said first shaft.

' 2. In speed changing mechanism, a spindle supported for rocking and longitudinal movements, a shaft supported for rocking and longitudinal movements, an intermediate shaft, a crank device for rocking said intermediate shaft by longitudinal movements of said first shaft and leaving said intermediate shaft stationary when said first shaft is rocked,.,a crank device for moving said spindle longitudinally by rocking movements of said intermediate shaft and permitting rocking movements of said spindle while said intermediate shaft remains stationary, and

a device for rocking said spindle by rocking movements of said first'shaft.

3. In speed changing mechanism, a spindle supported for longitudinal and rocking movements, a shaft supported for longitudinal and rocking movements, an intermediate shaft supported for rocking movements, means for imparting rocking movements to said intermediate shaft by longitudinal movements of said first shaft, means for moving said spindle longitudinally by rocking movements of said intermediate shaft, a crank in connection with said first shaft, a crank in connection with said spindle, and a link having its ends 'pivoted to said cranks respectively forirocking said spindle by rocking movements of said first shaft.

4. In speed changing mechanism, a spindle supported for longitudinal and rocking movements, a shaft, means for imparting selective longitudinal and rocking movements to said shaft, a part in connection with said shaft having a slot therein, a part in connection with said spindle having a slot therein an intermediate shaft supported for rocking movements, members on said intermediate shaft projecting into said slots and constituting means for rocking said intermediate shaft by longitudinal movements of said first shaft and moving said spindle longitudinally by rocking movements of said intermediate shaft, a crank rigid with said first shaft, a crank rigid with said-spindle, and a link pivotally connected with said cranks for rocking said spindle by rocking movementof said first shaft.

5. In speed changing mechanism, a longitudinally movable shaft, a part onsaid shaft having a slot therein, a' longitudinally movable spindle, a part on said spindle having a slot therein, an intermediate rock shaft, a sleeve on said intermediate shaft, an arm projecting from said sleeve, a rounded end on said arm engaging in said first slot for rocking said intermediate .shaft by longitudinal movements of said first shaft, an addi-' tional sleeve attached to said intermediate shaft, an arm projecting from said additional sleeve, and a rounded end on said arm engagmg in sald second slot for movlng sald spindle longitudinally by rocking movementsof said intermediate shaft.

6. In speed changing mechanism, a hearing, a shaft mounted for longitudinal and turning movements insaid bearing, a convex part in connection with said bearing, a concave arm abutting said convex part, 'a clamp device for holding said arm rigidly in selected adjustment on said convex part, a bearing supported by said arm, another bearing alined with said second bearing, a shaft j ournaled. for rocking movements in said two alined bearings, means for rocking said sec- 0nd shaft by longitudinal movements of said first'shaft, a spindle supported for longitudinal movements, and means for moving said spindle longitudinally by rocking movements of saidsecond shaft.

7. In speed changing mechanism, two

alined bearings, supports for said bearings, clamps for holding said bearings rlgidly- 1n proper adjustment 1n connection with said tive supporting members permitting the" bearing members to be turned to different adjustments to aline the bearings with each ments, a ball and slot connection between said first shaft and said second shaft for turning said first shaft by longitudinal movements of said second shaft and permitting turning movements of said second shaft while saidfirst shaft remains unoperated, a spindle to be moved, and means for, moving said spindle by said first shaft.

9. In speed changing mechanism, two spaced supporting members, two bearing members, clamps for holding said bearing members rigid and in proper adjustment in connection with the supporting members, means forming swivel contacting surfaces between the bearing members and the respective supporting members permitting the bearing members to be turned to different adv justments to aline the bearings with each other, a bearing supported by each of said bearing members a shaft ournaled for rocking movements in said bearings, a shaft mounted for longitudinal and turning movements, a ball and slot connection between said first shaft and said second shaft for turning said first shaft by longitudinal movements of said second shaft and permitting turning movements of said second shaft while said first shaft remains unoperated, a spindle supported for longitiidinal and rocking movements, and a ball and slot connection'between said first shaftand said spindleflfor moving said spindle longitudinally by turning movements of said first shaft and permitting turning movements of said spindle while said first shaft remains unoperated.

10. In speed changing mechanism, a pair of spaced bearings, members extending from said bearings, supporting members having convexed portions engaging in concave recesses in said first membersand permitting said bearings to be swiveled about said supporting members to proper relative adjust ments, a longitudinally movable rock shaft, a longitudinally movable rock spindle, a

' shaft mounted for turning movements in said bearings, and ball and slot connections between said second shaft and said first shaft and between said second shaft and' said,

spindle.

11 In speed changlng mechanism, a pair of spaced bearings, members extending from said bearings, supporting members having convexed portionsengaging in concave recesses in said first members and. permitting said bearings to be swiveled about said supporting members to proper relative adjustments, a longitudinally movable rock shaft, a longitudinally movable rock'spindle, a shaft mounted for turning movements in said bearings, and ball and slot connections between said second shaft and said first shaft and between said second shaft and said spindle for moving said spindle longitudinally by longitudinal movements of saidfirst shaft and permitting said second shaft to remain stationary when said first shaft is turned.

' 12. In speed changing mechanism, a pair of spaced supporting members having convexed portions, a pair of spaced bearings having concave portions receiving the convexed portions of said supports, clamping bolts rigidly securing said bearings in connection with said supports in selected angles of in- I lination with respect to the axes of said clamping bolts and holding said hearings in alinement, a shaft journaled for rocking movements in said bearings, a longitudinally movable shaft, and a ball on said first, shaft engaging in a slot in said longitudinally movable shaft for rocking said first shaft by longitudinal movements of said longitudinally movable shaft and permitting said first shaft to remain unoperated when said longitudinally movable shaft is turned.

13. In speed'changing mechanism, a pair of rigid supports, clamping bolts mounted in each of said supports, a bearing supported by each of said clamping bolts, rounded abutment surfaces on said bearings and said supports respectively and having abutting contact and permitting said bearings to be moved to different angles of inclination in any direction with respect to the axes of said bolts, a shaft supported for turning movements in said bearings,a spindle supported for longitudinal movements, a control shaft supported for longitudinal movements, and connections for turning said first shaft by longitudinal movements of said control shaft and for moving said spindle longitudinally by turning movements of said first shaft.

14. In speed changing mechanism, a pair of spaced bearings, ball and socket devices for supporting said bearings, bolts for clamping said bearings naled for rocking movements in said bearing's, a control shaft supported for longitudinal movements, means for rocking said first shaft by longitudinal movements of said con- 1n any desired adjustment with respect 'to the axes of said bolts, a shaft jourtrol shaft, a spindle supported for longitudinal movements, and means for moving said spindle longitudinally by rocking movements of said first shaft.

15. In speed changing mechanism, a shaft supported for longitudinal and turning movements, a second shaft, means for'supporting said second shaft for turning movements, a spindle supported for longitudinal .and turning movements, a pivotal gear device for imparting turning movements to said second shaft by longitudinal movement. of said first shaft and permitting turning movements of said first shaft while said second said rock shaft and said. first shaft and between ,said rock shaft and said spindle wherebyturning movements are imparted to said rock shaft by longitudinal movements of said first shaft and whereby longitudinal movements are imparted to said spindle by rocking movements of said rook shaft and permitting said first shaft and said spindle to be turned while said rock shaft remains unoperated.

17. In speed changing mechanism, a shaft supported for longitudinal and turning movements, a spindle supported for longitudinal and turning movements at an angle with respect to the plane of said shaft, a rock shaft, pivotal gearing devices between said rock shaft and said first shaft and between said rock shaft and said spindle whereby turning movements are imparted to said rock shaft by longitudinal movements of said first shaft and whereby longitudinal movements are imparted to said spindle by rocking movements of said rock shaft and permitting said first shaft and said spindle to be turned While said rock shaft remains unoperated, and connections operated by turning movements of said first shaft for turning said spindle while said second shaft remains unoperated.

18. In speed changing mechanism, a shaft supported for longitudinal and turning movements, a spindle supported for longitudinal and turning movements at an angle I with respect to the plane of said shaft, a

rock shaft, pivotal gearing devices between said rock shaft and said first shaft and between said rock shaft and said spindle whereby turning movements are imparted to said rock shaft by longitudinal movements of said first shaft and whereby longitudinal movements are imparted to said spindle by rocking movements of said rock shaft and permitting said first shaft and said spindle to be 4 turned while said rock shaft remains unoperated, connections operated by turning movements of said first shaft for turning said spindle whilesaid second shaft remains unoperated and while said spindle remains in a single longitudinal position, and means controlling said connections and permitting turning movements of said first shaft with out causing said connections to operate said spindle.

19. In speed changing mechanism, a spindle supported for rocking and longitudinal movements, a shaft supported for rocking and longitudinal movements, a pair of shafts, and gear and crank elements connecting said pair of shafts respectively with said first nal and rocking movements, an intermediate shaft supported for making movements, an intermediate shaft supported for longitudinal movements, means for imparting rocking movements and longitudinal movements to said two respective intermediate shafts by said first named shaft, and means for imparting longitudinal and rocking movements to said spindle by rocking and longitudinal movements of said intermediate shafts respectively.

21. In speed changing mechanism, a spindle supported for longitudinal and rocking movements, a shaft, means for imparting selective longitudinal and rocking movements to said shaft, an intermediate shaft geared to said spindle and to said shaft for rocking movements by longitudinal movements of said shaft and arranged, to impart longitudinal movements to said spindle, 'a second intermediate shaft, and means connecting said second intermediate shaft with said first named shaft and said spindle in order to translate rocking movements of said first named shaft into rocking movements of said spindle by lon itudinal movements of said second intermediate shaft.

22. In speed changing mechanism, a shaft supported for longitudinal and rocking movements, a lever for imparting longitudinal and rocking movements to said shaft, a spindle supported for longitudinal and rocking movements in a plane at an angle with respect to the plane of said shaft, an inter mediate shaft, gearing connecting said intermediate shaft with said first named shaft and said spindle respectively in an angular relationship in which longitudinal movements of said first named shaft will rock said intermediate shaft and move said spindle longitudinally, a crank arm on each said spindle and said shaft, and a shaft having pivotal connection with said crank arms in a relationship in which rocking movements of said first named shaft will cause said second intermediate shaft to rock said spindle.

23. In speed changing mechanism, a spindle supported for rocking and longitudinal movements, a shaft supported for longitudinal and rocking movements, a pair of intermediate shafts, and devices connecting said intermediate shafts respectively with said;

1 longitudinally, G0

' first named shaft and-said spin movements,

of saidintermediate shaftsto rock said'- spindle:

24. In speed changing mechanism, a spindle supported for rocking and longitudinal movements, a shaft supported for longitudinal and rocking movements, a pair of intermediate shafts, and devices connectingsaid intermediate shafts respectively with said le in a relationship in which longitudinal movements of said first named shaft will rotate one of said intermediate shafts and move said spindle longitudinally and in which rocking movements of said first named shaft will cause one of said intermediate shafts to rock said spindleand in which the said movement of either of said intermediate shafts by said first named shaft leaves the other intermediate shaft stationary.

25. In speed changing mechanism, a spindle supported for longitudinal and rocking movements, with said spindle for moving said spindlelongitudinally, a second intermediate shaft, means connecting said second intermediate shaft with said spindle for rocking said spindle by said second intermediate shaft, a shaft supported for longitudinal and rocking means for rocking said first named intermediate shaft by longitudinal movements of said last named shaft, and' means for imparting longitudinal movements to said second intermediate shaft by rocking movements of said last named shaft.

26. In speed changing mechanism, a spindle supported for longltudinal and rocking an intermediate shaft connected longitudinally, a second intermediate shaft connected wth said spindle for rocking said spindle, a shaft supported for longitudinal and rocking movements and at an angle w1th respect to said intermediate shafts, connec-' tions for rocking said first intermediate shaft by longitudinal movements of said last named shaft, and connections for moving said second intermediate shaft longitudinally by rocking movements of said last named shaft.

27. In speed changing mechanism, a spindle supported for longitudinal and rocking movements, ar intermediate shaft connecte with said spindle for moving said spindle. a second intermediate shaft connected with said spindle for rocking said spindle, a shaft supported for longitudinal and rocking movements and at an angle with respect to, said intermediate shafts, connections for rocking said first intermediate shaft by longitudinal movements of said last named an intermediate shaft geared.

shaft, and connections for moving said second intermediate shaft longitudinally by rocking movements of said last named shaft, each of said intermediate shafts remaining inefective when the other is moved as aforesa1 28. In speed changing mechanism, a'spin dle supported for longitudinal and rocking movements, an operating shaft supported for longitudinal and-rocking movements, a

pair of intermediate shafts and means connecting-the respective ends of said pair of shafts with said first named shaft and'with said spindle in a relationship in which longitudinal movements of said first named shaft will rock one of said intermediate shafts and thereby move said spindle longitudinally and whereby rocking movements of said first named shaft will move the other intermediate shaft longitudinally and thereby rock said spindle.

29. In speed changing mechanism, a spindle supported for longltudinal and rocking movements, an operating shaft supported for longitudinal and rocking movements, a

pair of intermediate shafts and means connecting the respective ends of said pair of shafts with said first named shaft and with said spindle in a relationshi in which longitudinal movements of said first named shaft will rock one of said intermediate shafts and thereby move said spindle longitudinally and whereby rocking movements of said first named shaft will move the other intermediate shaft longitudinally and thereby rock said spindle, each of said intermediate shafts remaining inefiective when the other is moved as aforesaid.

30. In speed changing mechanism, a spindle supported for longitudinal and rocking movements, a shaft supported for longitudinal movements, means for moving said shaft longitudinally, an intermediate shaft supported for rocking movements, gearing connecting said intermediate shaft with said spindle and with said first named shaft respectively whereby longitudinal movements of said first named shaft will rock said intermediate shaft and thereby move said spindle longitudinally, and means for selectively rocking said spindle by said first named shaft. v

31. In speed changing mechanism, a spindle mounted for rocking and longitudinal movements, a shaft supported for rocking movements, an intermediate shaft, devices connecting said intermediate shaft with said spindle and said first named shaft respectively whereby rocking longitudinal movements of said first named shaft will rotate said intermediate shaft and move said" spindle longitudinally, and means for rocking said spindle by said first named shaft.

32. In speed changing mechanism, a

rocking movements, a shaft supported for longitudinal movements, means for moving said shaft longitudinally, an intermediate shaft supported for' rocking movements, gearing connecting said intermediate shaft with said spindle and with said first named shaft respectively whereby longitudinal movements of said first named shaft will rock said intermediate shaft and thereby move said spindle longitudinally, and means for selectively rocking said spindle by said first named shaft, said last named means remaining ineffective when said intermediate shaft is rocked by said first named shaft as aforesaid.

33, In speed changing spindle mounted for rocking and longitudinal movements, a shaft supported for rocking movements, an intermediate shaft, devices connecting said intermediate shaft with said spindle and said first named shaft respectively whereby longitudinal movements of said first named shaft will rotate said intermediate shaft and move said spindle longitudinally, and means for rocking said spindle by said first named shaft, said last named means remaining ineffective when said intermediate shaft is rocked and said spindle is moved thereby as aforesaid.

34. In speed changing mechanism, the combination of two shafts extending at an angle to each other and mounted for either longitudinal or rocking movement, a rock shaft, gearing connecting the respective ends of said rock shaft with said two shafts for transmitting longitudinal movement from one of said two shafts to the other through rocking movements of said rock shaft, and other means connecting the two said shafts for transmitting rocking movements from one to the other, said gearing and said other means being selectively operable independently of each other.

35. In speed changing mechanism, the combination of two shafts extending at an angle to each other and mounted for either longitudinal or rocking movement, each shaft having a crank arm secured thereto, with a link connection pivoted therebetween for transmitting rocking movement from one shaft to the other, a rotary shaft, gearing connecting said rotary shaft with said two shafts respectively for directly transmitting longitudinal movement from one of said two shafts to the other, and means preventing longitudinal movement of said rotary shaft.

36. In speed changing mechanism, the combination of two shafts extending at an angle to each other and mounted for either longitudinal or rocking movement, each shaft having a crank arm secured thereto with a link connection pivoted therebetween for transmitting rocking movement from one shaft to the other, and rotative rocking means engaging said two shafts for transmechanism, a

mitt-ing longitudinal movement from one of said two shafts to the other, said link con- ,nection and said rotative connecting means to the other.

ELMER G. KESLING. 

